Surface-gage.



Patented Apr. 23, [90].

8. H. BELLUWS.

SURFACE GAGE.

(Application filed Dec. 31, 1900.)

(No Model.)-

Eye/Zia) //0y 6596361! ZBeZZowa W I 23" I 5 the following is aspecification.

STEPHEN II. BELLOWS, OF ATHOL, MASSACHUSETTS, ASSIGNOR TO THE ATHOLMACHINE 00., OF SAME PLACE.

SURFACE-GAG E.

SPECIFICATION forming part of Letters Patent No. 672, a ed April 23,1901.

Application filed December 81, 1900. Serial No. 41,692. (No model.)

To ctZZ whom it may concern:

Be it known that I, STEPHEN H. BELLows, a citizen of the United States,residing at Athol, in the county of Worcester and State ofMassachusetts, have invented new and use ful Improvements inSurface-Gages, of which My invention relates to surface-gages, oneobject of the same being to provide a positive, rigid, and unyieldingconnection between the upright on which the pointeris adjustably mountedand the adjusting-arm for the upright.

Other objects of the invention will hereinafter appear.

The invention consists of a pivotallymounted upright or standard havinga pointer adjustable thereon, a laterally-extending adjusting-arm forsaid upright or standard, and a toothed clutch connection between saidupright and said arm.

The invention also consists in certain features and details ofconstruction and eombi nations of parts which will be hereinafter morefully described and claimed.

In the drawings formiuga part of this specification, Figure 1 is aperspective view of my improved surface-gage. Fig. 2 is a longitu-.dinal vertical section. Fig. 3 is a transverse section taken on the line3 3 of Fig. 2, and Figs. 4 and 5 are detail perspective views.

Like reference-numerals indicate like parts in the different views.

The base 1 of my improved gage is formed on its upper side with twoparallel lugs or cars 2 3, the ear 2 having a transversely-extendinghorizontally-disposed shaft 4 therein, which projects through anenlarged opening 5 in the ear 3. Said opening 5 is provided withscrew-threads, as clearly shown. Mounted for pivotal movement on thehorizontal shaft 4 is a sleeve 6, one end of which bears against the lug2 and the other end of which is provided with teeth or serrations 7,said sleeve, with the serrations thereon, constituting one member of aclutch. The other member of said clutch consists of a collar 8,cmbracing the shaft 4, having teeth or serrations 9 on one edge thereof,which are adapted to engage the teeth or serrations 7 on the sleeve 6,and an adjusting-arm 10 secured to or formed integral with said collarand projecting laterally therefrom. Extending through the opening 5 inthe lug or ear 3 and provided with external screw-threads 11, whichengage the screw-threads in said opening, is an adjusting screw orsleeve 12, having a milled head 13 on its outer end, by means of whichsaid sleeve or screw may be turned. The inner end of the sleeve or screw12 is adapted to bear against the collar 8 for the purpose of forcingsaid collar into locking engagement with the sleeve 6. The said sleeve 6is formed with a socket 14, in which is secured an upright or standard15. On this standard is adjustably mounted the pointer 16. The saidpointer is capable of rotary and longitudinal adjustmentin a bracket 7,and said bracketis vertically adjustable on the upright or standard 15.The adjusting-arm 10,whieh is secured to the collarS, constituting onemember of the clutch, is provided with an opening 18 at or near itsouter end, through which opening ex tends a vertically-disposed threadedrod or stud 19, secured to the base 1 and extending upwardly therefrom.Adjustable on the rod 19 and located on opposite sides of the arm 10 arethe set-nuts 20 and 21. When said nuts are moved so that they engageopposite sides of the arm 10, said arm and the parts connected therewithare rigidly locked against movement. By loosening the upper set-nut 20,however, from its engagement with the arm 10 and turning the lowerset-nut 21 so that it moves upwardly on the rod 19 the free end of theadjusting-arm 10 and the parts connected therewith will be rocked and anew adjustment of the same obtained. A corresponding downward movementand adjustment of the arm 10 may be effected by first lowering the lowerset-nut 21 and screwing the upper set-nut 20 down upon the rod or stud19.

In using my device the adjusting screw or sleeve 12 is loosened, so asto move the inner end thereof away from the collar 8, which constitutesone member of the clutch, and thereby disengaging the two parts of theclutch one from the other. The sleeve 6, with the standard 15 andpointer 16 connected thereto, is then free to be turned to approximatelythe proper position on the shaft 4,

when the set-screw 12 is screwed up and the teeth or serrations 9 on thecollar 8 are brought into locking engagement with the teeth orserrations 7on the sleeve 6, and an approximate adjustment of theupright or standard 15' and of the pointer 16 thereon is therebyobtained, and said upright is positively locked against rocking movementon theshat't 4, from which it is supported. The finer adjustment of theupright or standard 15 and of the pointer 16 thereon may be obtained byloosening one of the set-nuts 2O 21 and turning the other of saidset-nuts, so as to move the adjusting-arm 10 in one direction or theother. As said adj usting-arm 10 is positively locked, through theclutch described, to the,

upright or standard 15, any movement of said adj usting-arm willtransmit a corresponding movement t'os'aid upright or standard. When thefiner adjustment has been obtained through the arm 10, all the parts maybe firmly locked against movement by turning the set-nuts 20 21 so thatthey will engage opposite sides of the arm 10.

In the under side of the base 1 is a slit or groove 22, extendingtransversely thereof and terminating a short distance from the upper- Inthis slit or groove fits and is movable a gage-plate 23, having asurface of said base.

screw-threaded stem 24 thereon, which projects up through a verticalopening in the base 1 and has an adjusting-nut 25 on its up- This plate23 is provided for the per end. purpose of enabling the base 1 to bealined with reference to its support. down the nut 25 upon the upper endof the stem 24 the plate 23 may be raised, so that it lies entirelywithin the slit or groove 22. By loosening said nut 25, however, saidplate 2'3may'be caused to drop below the surface of the base 1, andthereby acts as a guard or guide to aline the base with reference to itssupport, the same being adapted to bear against or engage the'side edgeof the part on whichthe gage is located.

Having now described my invention, What I claim as new, anddesire tosecure by'Let'ters Patent, is

1. In a surfacegage, a pivotally-mounted upright or standard carrying anadjustable By screwing 1 pointer, 'a laterally-extending adjusting-armfor said upright, and a toothed adjustable clutch connection betweensaid arm and said upright.

3. In a surface-gage, a pivotally-mounted upright or standard carryingan adjustable pointer, a laterally-extending adj Listing-arm for saidupright, a toothed clutch connection between said arm and said upright,and positive means for locking said arm against movement in eitherdirection when the same is in its adjusted position.

4. In a surface-gage, a base, a pivotallymounted upright or standardthereon, a pointer adj ustabl'e' on said upright, an" ad j-ustin g-armfor said upright, a clutch connection between said arma-ndsaid' upright,a threaded rod secured to said base and extending through said'arm, andset-n u't's on-said threaded rod located on opposite sides of said arm.5. In a surface-gage, the combination with a base having a plurality oflugsor earsproject-ing upwardly therefrom, of a shaft extending throughsaid ears, a sleeve loosely mounted on said shaft having teeth orserrations atone end and constituting one member of a clutch, an uprightor' standard carrying an adjustable pointer secured to said sleeve, 1 acollar loosely'mounted on said sh-aft'having teeth or serrations atoneend adapted to engage the teeth or serrations on said sieeveandconstituting the other member of the clutch,

a laterally-extending adj usting arm secured to said collar, means forforcing said clutch members into locking engagement with each other; andmeans for adjust'i-ng'said arm and the parts connected therewith.

In testimony whereof I have hereunto set my hand in presence of twosubscribing wi n'ess'es.

STEPHEN H. BELLQWS. Witness-es A. FOSTER HAMILTON, ANDREW J. HAMILTON.

